# Dome light creating artifacts **URL:** \ **Category:** Issues\ **Created:** [September 1, 2017, 3:35pm UTC](https://forums.chaos.com/t/dome-light-creating-artifacts/84617 "2017-09-01T15:35:09Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![atrask\_hksinc.com](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/atrask_hksinc.com/32/38920_2.png) [@atrask\_hksinc.com](https://forums.chaos.com/u/atrask_hksinc.com)\ **Post date:** [September 1, 2017, 3:35pm UTC](https://forums.chaos.com/t/dome-light-creating-artifacts/84617/1 "2017-09-01T15:35:09Z")
The dome light in my scene is creating nasty artifacts. I’ve deleted it and replaced it with another and the artifacts are still there. It happens in all the camera views around the same spot. There are no maps in the dome light. The scene was rendering fine before. Happens with both distributed rendering and rendering locally. Here are some of the render elements: RGB ![rgb.jpg](https://europe1.discourse-cdn.com/chaosprd/original/2X/a/ab837dc01a9a502c913c1ecc5728942f3b46f452.jpeg) Dome Light ![ibl.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/4/a/4a19908a81fa8dbbf82a99cf744bcd578b26a147.jpeg) GI ![gi.jpg](https://europe1.discourse-cdn.com/chaosprd/original/2X/5/525eb85f393c49036609ab240d853e352c7384c5.jpeg) AO ![ao.jpg](https://europe1.discourse-cdn.com/chaosprd/original/2X/8/852b1536f2425a5952e4bc22c6a956c8b3f4f00e.jpeg) Has anyone ever had this problem? ![gi.jpg](https://europe1.discourse-cdn.com/chaosprd/original/2X/5/525eb85f393c49036609ab240d853e352c7384c5.jpeg) ![ibl.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/4/a/4a19908a81fa8dbbf82a99cf744bcd578b26a147.jpeg) ![rgb.jpg](https://europe1.discourse-cdn.com/chaosprd/original/2X/a/ab837dc01a9a502c913c1ecc5728942f3b46f452.jpeg) ---
**Author:** ![Vizioen](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/vizioen/32/59355_2.png) [@Vizioen](https://forums.chaos.com/u/Vizioen)\ **Post date:** [September 1, 2017, 5:00pm UTC](https://forums.chaos.com/t/dome-light-creating-artifacts/84617/2 "2017-09-01T17:00:41Z")
Cool, does raising the secondary rays bias to 0.01 help? ---
**Author:** ![atrask\_hksinc.com](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/atrask_hksinc.com/32/38920_2.png) [@atrask\_hksinc.com](https://forums.chaos.com/u/atrask_hksinc.com)\ **Post date:** [September 1, 2017, 6:57pm UTC](https://forums.chaos.com/t/dome-light-creating-artifacts/84617/3 "2017-09-01T18:57:43Z")
I can go back and give it a shot. I ended up resetting the .max scene and merged in everything from the original file including the render settings. Renders fine now ?\_(ツ)\_/? ---
**Author:** ![atrask\_hksinc.com](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/atrask_hksinc.com/32/38920_2.png) [@atrask\_hksinc.com](https://forums.chaos.com/u/atrask_hksinc.com)\ **Post date:** [September 1, 2017, 7:59pm UTC](https://forums.chaos.com/t/dome-light-creating-artifacts/84617/4 "2017-09-01T19:59:47Z")
So it just popped up again out of no where in this scene where I reset max and merged everything in. Turns out it’s not just the IBL but all direct lighting. Raising the secondary ray bias to 0.01 didn’t help. RGB ![rgb2.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/7/c/7cf1bb3dea610cdcef701fe722b003c38713c238.jpeg) Lighting.IBL ![ibl2.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/b/1/b14e778dc2ae5ac583c1648a7fbecbd616686bb5.jpeg) Lighting.Plane ![lit2.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/7/4/749b7017846bb51fe5c549297ced6c8d0dfed2eb.jpeg) GI ![gi2.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/a/3/a3602cdffb41eb02ab6ba40a9150734988db9250.jpeg) ![ao2.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/a/1/a1bd382a7c7253beeb65d448d5882ecc3a84c548.jpeg) ![gi2.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/a/3/a3602cdffb41eb02ab6ba40a9150734988db9250.jpeg) ![rgb2.jpg](https://europe1.discourse-cdn.com/chaosprd/original/3X/7/c/7cf1bb3dea610cdcef701fe722b003c38713c238.jpeg) ---
**Author:** ![atrask\_hksinc.com](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/atrask_hksinc.com/32/38920_2.png) [@atrask\_hksinc.com](https://forums.chaos.com/u/atrask_hksinc.com)\ **Post date:** [September 1, 2017, 8:31pm UTC](https://forums.chaos.com/t/dome-light-creating-artifacts/84617/5 "2017-09-01T20:31:38Z")
I found this in the vray documentation. Sort of looks like the same artifact: [https://docs.chaosgroup.com/display/…lobal+Switches](https://docs.chaosgroup.com/display/VRAY3MAX/Global+Switches) ![Capture.JPG](https://europe1.discourse-cdn.com/chaosprd/original/3X/f/e/fedf006de56f8c470be799f75519c5a42a64e877.jpeg) I can’t find the ‘2 sided option’ checkbox in the material though… am I looking right at it? [edit: found it, it’s checked] ![Capture.JPG](https://europe1.discourse-cdn.com/chaosprd/original/3X/f/e/fedf006de56f8c470be799f75519c5a42a64e877.jpeg) ---
**Author:** ![atrask\_hksinc.com](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/atrask_hksinc.com/32/38920_2.png) [@atrask\_hksinc.com](https://forums.chaos.com/u/atrask_hksinc.com)\ **Post date:** [September 1, 2017, 10:39pm UTC](https://forums.chaos.com/t/dome-light-creating-artifacts/84617/7 "2017-09-01T22:39:23Z")
\>Try to disable adaptive lights - set it to uniform probabilistic. That seems to be working, thank you!! ---
**Author:** ![yavor.rubenov](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/yavor.rubenov/32/2946_2.png) [@yavor.rubenov](https://forums.chaos.com/u/yavor.rubenov)\ **Post date:** [September 2, 2017, 11:51am UTC](https://forums.chaos.com/t/dome-light-creating-artifacts/84617/8 "2017-09-02T11:51:11Z")
Hello, What are your GI settings and what is your V-Ray version ? Best regards, Yavor ---
**Author:** ![atrask\_hksinc.com](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/atrask_hksinc.com/32/38920_2.png) [@atrask\_hksinc.com](https://forums.chaos.com/u/atrask_hksinc.com)\ **Post date:** [September 5, 2017, 2:48pm UTC](https://forums.chaos.com/t/dome-light-creating-artifacts/84617/9 "2017-09-05T14:48:33Z")
GI settings are Brute Force / Light Cache, default settings. Vray Adv 3.50.03 ---
**Author:** ![vlado](https://avatars.discourse-cdn.com/v4/letter/v/779978/32.png) [@vlado](https://forums.chaos.com/u/vlado)\ **Post date:** [September 5, 2017, 8:33pm UTC](https://forums.chaos.com/t/dome-light-creating-artifacts/84617/10 "2017-09-05T20:33:43Z")
If you upgrade to 3.6, is the issue still there? Best regards, Vlado